Compass, Type B-3, Pre-WWII, Air Corps US Army Canberra and emergency conditions

and emergency conditions

but could probably be opened and repositioned

A ring rotates a second lens

thinking it was an early vintage flight helmet

a fully synchronous radar system without provision for an optical bombsight tie-in

Compass, Type B-3, Pre-WWII, Air Corps US Army Canberra and emergency conditionsHere is an original 1920's era Aircraft Compass Type B 3 made for aircraft of the Air Corps US Army. The compass card rotates within the housing that is suspended on vibration mounts to the left and right. The mounts are affixed to a bracket that was then mounted vertically to the instrument panel of the aircraft. At both top and bottom of the compass housing are compartments for compass correction rods. This example is exceptional given that the